形容词
中文翻译：无法支撑的
同义词：
['unstable', 'unreliable', 'unsustainable例句：1. The bridge was too old and unstable to be used anymore.（这座桥太旧了，无法再使用了。）']
例句：
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1. The bridge was too old and unstable to be used anymore.
这座桥太旧了，无法再使用了。
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2. The project is unreliable because of the lack of funding.
这个项目因为缺乏资金而变得不可信赖。
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3. The company's financial situation is unsustainable due to high debt levels.
由于高债务水平，公司的财务状况是不可持续的。